Wrench.



F. HAGHMANN.

WRENGE.

APPLICATION FILED APR. 11, 1908.

91 0, 127. Patented Jan. 19, 1909.

iiitrrnn sra'rns PlfENl orinon.

FREDERICK I-IACHMANN, OF ST, PAUL, MINNESOTA, ASSIGNOR OI" TWO-'IIIIRDS TO WALTER W. WHITMAN, OF ST. PAUL,-MINNESOTA, AND ON E-IQIUHTII TO JOHN R. BAILEY, OF MIN- NEAPOLIS, MINNESOTA.

WRENCH.

Specification of Letters Patent.

Patented Jan. 19, 1909.

To all 213710111. it may concern:

Be it known that I, Fmcomncu I'IACUMASX, a citizen of the United States, residing at St. .laul. in the county of Ramsey and State ol Minnesota, have invented certain new and useful Improvements in \Vrent-hes; and I do he'eby declare the following to be a full. clear, and exact description of the invention. such as will enable others skilled in the art to which it appertains to mat. and use the same.

My invention has for its object to provide an improved n1onkey-wrench, and to this end, it consists of the novel devices and combinations of devices hereinafter described and defined in the claims.

The invention is illustrated in the accompanying drawings, wherein like characters indicate like parts throughout the several views.

Referring. to the drawings; Figure l is a view in side elevation of my improved monkey-wrench, with some parts broken away and other parts in section. Fig. 2 is a transverse vertical section taken on the line a" of Fig. l; and Fig. 3 is a view corresponding to Fig. 2, but with a so-called set-block shown in a dili'erent position.

The numeral 1 indicates a bar having a fixed jaw Two rows of oppositely pr0jectiug notches or teeth 3 are formed on the bar I. A. slidable jaw lis loosely mounted on the bar l for ootl 'ieration with the tixed jaw 2, and is provided with a rearwardly extended head portion .3 having a rearwardly extended and inturned stop linger 6, the'purpose of which will presently appear. Mounted on the bar 1, between the inturncd end of the stop linger t3 and the head 5, for a limited rotar movement, is a set-block 7 provided with internal teeth 8 for cooperation with the teeth on the bar I. Said set-block 7 is also provided with a segmental slot 9 having an adjusting screw 10 mounted therein and held against endwise movement with respect thereto, by a head 11 and a knurled wheel 12.1

The forwardlyprojecting end of said adjusting screw It) has screw-threaded engagement with the head on the slidable jaw 4.

As is evident, when the setblock T is turned into the position indicated in Fig. 3, the said sct-block, head and slidable jaw may he slid or moved freely over the bar 1;."

l mcut' o't the two jaws with respect to each other. Thciu by turning the set-block T into the position indicated in Fig. 2, its teeth 8 will be brought into engagement with the teeth 3 on the bar 'I, thereby securing said set-block, head and movable jaw against endwise movement; and, then by turning the knurled head 12, the movable jaw 4 may be moved to its final adjustment. the setblock 7 acting as a base of reaction for the adjusting screw it). The stop linger prevents the set-block and head from becoming separated from each other;

As is evident, the improved monkeywrench may be very quickly and easily applied to any object desired to be grasped, or removed therefrom. It simple, strong and ot' e0n'1parativc.l small cost, and has been found highly ellicient. for the purpose had in view.

What I claim is 1. In awreneh of the kind described, the combination with a bar having a fixed jaw andprovided with teeth upon one side. of a slidable jaw mounted on said bar, a set block relativ ly mounted on the bar and having internal teeth for engagement with the teeth on the bar, and an adjusting screw mounted in the said set block and said slidablc jaw, substantially as de--;cribed.

In a wrench ol the kind des ribed, the combination with a bar having a fixed jaw and provided with teeth upon one side. of a slid-able jaw mounted on said bar, a setbloek having internal teeth for ci'igagement with the teeth on said bar and provided with a segmental slot, and an adjusting screw mounted in said slot and having screwthrcadcd engagement with said slidable jaw, substantially as described.

In a wrench of the kind descril ed-, the

and provided with teeth upon one side, a slidable jaw mounted on said bar a set-block having internal teeth for engagement with the teeth on said bar and provided with a segmental slot, an adjusting screw mounted in said slot and having scrc\\'-tln'eaded .engagement with said slidablo jaw, and a stop for limiting the endwise movement of said set-block with respect to said slid-able jaw, substantially as described.

4-. In a wrench ol" the kind described,.the

to secure approximately the desired adjustl con'ibiuation with a bar having a fixed jaw combination with a bar having a tixcd jaw and rovided with teeth upon one side, of a block with respect to the'slidable jaw, sub- 10 slidafile jaw mounted on said bar, a setstantially as described. 7

block having internal teeth for engagement In testimony whereof I aflix my signature with the teeth on said bar and provided with in presence of two witnesses.

5 a se ental slot an ad'ustin screw mounted i ii sai'cl slot and hziving serew-threaded FREDERICK HACBMANN engagement with said slidable jaw, and a Witnesses: stop finger carried by said slidable jaw for H. D. KILGORE, limiting the endwise movement of the set- MALIE HOEL. 

